Surface Laptop and Windows Insiders get new UEFI and firmware update

New firmware and UEFI drivers are heading out to Surface Laptop owners who are also Windows Insiders for early testing.
Starting on September 12th, we noticed one of our Surface Laptops (Windows Insider, Fast Ring) picked up no less than seven new firmware updates through a Windows Update check.
Today, we've seen the updates come through on two other Surface Laptops (Windows Insider, Release Preview). However, Microsoft has not announced any changes on its Surface Update History page.